CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Income Statement [Abstract]
Net sales	$ 608,932	$ 569,704	$ 610,530
Cost of sales	470,232	439,410	464,861
Gross profit	138,700	130,294	145,669
Operating expenses:
Selling	65,902	64,648	62,760
General and administrative	35,193	34,817	34,919
Product design and development	37,772	35,557	35,530
Total operating expenses	138,867	135,022	133,209
Operating (loss) income	(167)	(4,728)	12,460
Nonoperating income (expense):
Interest income	805	1,031	723
Interest expense	(106)	(160)	(217)
Other (expense) income, net	(541)	(1,087)	(537)
(Loss) income before income taxes	(9)	(4,944)	12,429
Income tax (benefit) expense	(500)	(3,986)	6,867
Net income (loss)	$ 491	$ (958)	$ 5,562
Weighted average shares outstanding:
Basic (in shares)	45,031	44,926	44,457
Diluted (in shares)	45,316	44,926	44,873
Earnings (loss) per share:
Basic (in dollars per share)	$ 0.01	$ (0.02)	$ 0.13
Diluted (in dollars per share)	$ 0.01	$ (0.02)	$ 0.12